Grayhairissimplyapartofthenormalagingprocess,andtherate...
问题详情：Grayhairissimplyapartofthenormalagingprocess,andtherateyougosilverisgeneticallypredetermined.Goinggrayisnotassociatedwithearlierdeath,andprematuregrayingisnot,generallyspeaking,asignofanillnes...